/*
 * jPOS Project [http://jpos.org]
 * Copyright (C) 2000-2015 Alejandro P. Revilla
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.jpos.q2.qbean;

import org.jpos.core.Configuration;
import org.jpos.core.ConfigurationException;
import org.jpos.q2.QBeanSupport;

import java.io.IOException;
import java.net.ServerSocket;

public class QSingleInstancePortBasedManager extends QBeanSupport {

	ServerSocket ss;

	int port;

	/*
	 * (non-Javadoc)
	 *
	 * @see org.jpos.q2.QBeanSupport#initService()
	 */
	@Override
	protected void initService() throws Exception {

		try {
			// attempt to bind, if another instance is already bound, an
			// exception will get throwm
			ss = new ServerSocket(port);
		} catch (IOException e) {
			getLog().error("An instance of Q2 is already running. Shutting this instance");
			getServer().shutdown();
		}

	}

	@Override
	public void setConfiguration(Configuration cfg) throws ConfigurationException {

		super.setConfiguration(cfg);

		port = cfg.getInt("port", 65000);
	}

}
